56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
#include <cstddef>
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#include <cstdio>
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#include <iostream>
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#include <sstream>
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#include <stdexcept>
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#include <string>
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#include <tuple>
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#include <doctest.h>
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#include <aocpp/Startup.hpp>
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namespace {
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auto Solve(std::istream & in) -> std::pair<std::size_t, std::size_t>
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{
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std::size_t p1{0}, p2{0};
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std::string line;
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while (std::getline(in, line)) {
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unsigned a,b,c,d;
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if (4 != std::sscanf(line.c_str(), "%u-%u,%u-%u\n", &a, &b, &c, &d)) {
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throw std::runtime_error{"bad input"};
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}
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if (a <= c && d <= b || c <= a && b <= d) p1++;
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if (a <= c && c <= b || a <= d && d <= b ||
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c <= a && a <= d || c <= b && b <= d) p2++;
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}
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return {p1, p2};
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}
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} // namespace
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TEST_SUITE("2022-04 examples") {
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TEST_CASE("example") {
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std::istringstream in {
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"2-4,6-8\n"
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"2-3,4-5\n"
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"5-7,7-9\n"
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"2-8,3-7\n"
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"6-6,4-6\n"
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"2-6,4-8\n"};
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auto [p1,p2] = Solve(in);
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CHECK(p1 == 2);
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CHECK(p2 == 4);
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}
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}
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auto main(int argc, char** argv) -> int {
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auto [p1,p2] = Solve(*aocpp::Startup(argc, argv));
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std::cout << "Part 1: " << p1 << std::endl;
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std::cout << "Part 2: " << p2 << std::endl;
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}
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